7 letters · 15 points in Scrabble
noun two words that can be interchanged in a context are said to be synonymous relative to that context
originFrom Middle English sinonyme, from Latin synōnymum, from Ancient Greek συνώνυμον (sunṓnumon), neuter singular form of συνώνυμος (sunṓnumos, “synonymous”), from σύν (sún, “with”) + ὄνομα (ónoma, “name”). By surface analysis, syn- + -onym.
Etymology from Wiktionary, CC BY-SA 3.0